Some programs do require Step 2 to interview or for ranking but honestly that's a good score and I would submit it. Can't speak for the PD's out there but if you think about it logically a 244 with no step 2 might very well lose out to someone with even a 220 or 230 on CK. By not releasing it it might look like your step 1 is a fluke. If you have an otherwise outstanding app, are AOA, etc than of course it wouldn't matter as much. If you are an average applicant I would submit.
Cheers!